Turbinal screw-propeller.



W. J. ZINTBOK. TURBINAL SCREW PBOPELLER. APPLICATION FILED JUN 24, 1912.

Patented Mar, 24; 19M 12 Z )7 hue/2 /ox Iran STATES WILLIAM J. ZINTECK,or sr. PAUL, MINNESOTA.

TURBINAL SCREW-PROPELLER.

Specification of Letters Patent.

Application filed June 24,1912. Serial No. 705,414.

of which the following is a specification.

lllS invention relates to Improvements inscrew propellers for boats, sh

lps and vessels of every kind, and has for its object'the atof greaterspeed on waters and a propulsion of water I attain the general objectsstated by the,

operation, at the stern, of turbmal screw propellers, consisting of fourconsecutive true edged sections, and all of which are made of met-a1 ofanature and quality, and also made in a size and diameter, that maydlfier accordlng to the size or water craft, the momentum required forits head of like kind propulsion, or the cylindrical f asize andstrength proportionate to the weight of the propellers and to the use ofthe water craft, and are held fast and in place, at their fore end, tothe propeller shaft by a two-piece metal shoulder-head firmly secured tothe shaft by sunk metal keys, and at their after end to the propellershaft by a shoulderwith hexagon a erture tting corresponding hexagon shat end, and by nut and cap at the end of the shaft. All is supported by ahanger attached to the after end of the shaft and to the boat, s ip, orVessel. The propellers rotate in outward directions from the top of thesec- The combination and attachments Figure 1 shows side view of theassembled sections; Fig. 3 shows )eller section; Fig. 4 shows cap andnuton tfter end of the propeller shaft; Fig. 5 :hows shoulder-head on forepart of proeller and also shows sunk boulder-head, holding it fast tothe shaft;

the United States, residing at Screw-Propeller,

weight of thepressure against the the four "combined metal key in such-b Fig. 6 shows front side and to View of hanger independent from the oter mechanism; Fig. v7 s ows propeller shaft.

Similar letters refer to similar parts throughout the several views.

- he sections a of the propeller are ground to a true edge to fit andall sections are assembled and held securely together by clutches I)cast onto one Patented Ma 24,1914.

corresponding sections,

s1 e of section a, and corresponding sockets coast in the other s1de ofsection a. The peller shaft (2 through their center aperture. They areheld in place and order on such propeller shaft d, at their fore end, bya two-piece metal shoulder-head e ts, and iporresponding clutch b infore secher by bolts and nuts f, and is rmlyin place on shaft d by sunkmetal key'g. They are held in place and order on such propeller shaft05, at their after end by shoulder-head It, with ture g and sockets s tofit corresponding shaft and the combined sections a are supported atafter end by a two-piece hanger 7c and Z with anti-friction bearingrings m, at tached to water craft b bolts 12, at bolt holes p, throughtop Z 0 hanger. Parts is and Z of this hanger are securely fastened andheld together by bolts 0. 1

e operation of this pro eller is effected in the same manner as in t ecase of other screw propellers, but the potency of the revolutions ofthis propeller in the water is far greater rapidity in spiralsuccession, of sections, and the consequent greater utilization of the"water in propulsion by its winding or circling around the fore sectionsand gradually receding from them without diminishing in force andeffect.

I claim:

of the revolutions,

a two-part clamp adapted to emand provided with keys for engagement withsaid slots, said clamp bee, with sockpropeller which shoulder-head ising further provided with a pair of clutch hexagonal portion and a nutadapted to ensockets, a sleeve mounted'on said shaft, said gage saidthreaded part to hold said locking sleeve being formed of a plurality ofsechead in place, clutch teeth on said locking 20 tions each sectionbeing provided at one end head for engagement with the sockets of the 5with a pair of diametrically disposed clutch adjacent sleeve section, ahollow cap mountteeth and at the other end with a pair of ed forthreaded engagement with said locksockets oppositely disposed on adiameter at ing head and adapted to inclose the nut and right angles tothat on which said teeth are shaft end, and a supporting bracket depend-25 mounted, and a pair of helical blades arin from the stern of the boatand provide 10 ranged in alinement with the blades of the with a bearingin which said hollow cap is adjacent sections, the teeth of the sectionadadapted to revolve. jacent the clamp being adapted to engage DatedJune 21, 1912.

with the sockets on said clamp, said shaft WILLIAM ZINTECK.

being further provided with a hexagonal 15 portion ending in a threadedpart at the ex- Witnesses:

tremity of the shaft, a locking head with a. EnmnN MGGRATI-I, hexagonalbore for engagement with said C. D. OBRIEN, Jr.

